Finding the Fourth Proportional to 428,740.52, 591,722.08 and 247,413.92
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Solution
The fourth proportional to 428,740.52, 591,722.08 and 247,413.92 is: 341,465.92
Step by Step Solution
- Step 1: Write the proportion equation
428,740.52 : 591,722.08 = 247,413.92 : x - Step 2: Convert to fraction form
428,740.52/591,722.08 = 247,413.92/x - Step 3: Cross multiply
428,740.52x = 591,722.08 × 247,413.92 - Step 4: Simplify right side
428,740.52x = 146,400,275,786.21 - Step 5: Solve for x
x = 146,400,275,786.21/428,740.52 - Step 6: Final answer
x = 341,465.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.